%0 Journal Article
%A Motalov, V.
%A Bencze, L.
%A Yin, X.
%A Spatschek, R.
%A Singheiser, L.
%T Measurment of Thermodynamic Activity of Zirconia in Yttria-Stabilized Zirconia Electrolyte for Solid Oxide Fuel Cell Application
%J Calphad
%V 64
%@ 0364-5916
%C Amsterdam [u.a.]
%I Elsevier Science
%M FZJ-2019-05580
%P 342 - 346
%D 2019
%X The Knudsen effusion mass spectrometry technique was applied to determine the activity of ZrO2 in 8 mol% yttria-stabilized zirconia (8YSZ) in the temperature range from 2200 K to 2500 K. The minor ZrO2+ ion current was used in calculations instead of the prevailing ZrO+ signal. The phase stability of the samples and their negligible interaction with the cell material was proved by XRD-analysis. The activity of ZrO2 was obtained to be 0.84 ± 0.04 independent of temperature. This fact allows estimating the same value of activity in the operating temperature range of solid oxide fuel cells (SOFCs).
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000460842600037
%R 10.1016/j.calphad.2019.01.010
%U https://juser.fz-juelich.de/record/866469